Ford Ecosport Owners and Service Manuals

Ford Ecosport: Supplemental Restraint System / Diagnosis and Testing - Pinpoint Test - DTC: W

Ford Ecosport 2014-2025 Service and Repair Manual / Body and Paint / Supplemental Restraint System / Diagnosis and Testing - Pinpoint Test - DTC: W

U0146:00

Normal Operation and Fault Conditions

The RCM uses information contained in messages from the GWM sent on the HS-CAN2 .


  DTC Fault Trigger Conditions


  DTC Description Fault Trigger Conditions
U0146:00 Lost Communication with Gateway "A": No Sub Type Information This DTC sets if the RCM does not receive an expected message from the GWM for 6 seconds.

Possible Causes

  • Network traffic
  • GWM
  • RCM

PINPOINT TEST A: U0146:00
NOTE: Most faults are due to connector and/or wiring concerns. Carry out a thorough inspection and verification before proceeding with the pinpoint test.
NOTE: Only disconnect or reconnect SRS components when instructed to do so within a pinpoint test step. Failure to follow this instruction may result in incorrect diagnosis of the SRS .
NOTE: Always make sure the correct SRS component is being installed. Parts released for other vehicles may not be compatible even if they appear physically similar. Check the part number listed in the Ford parts catalog to make sure the correct component is being installed. If an incorrect SRS component is installed, Diagnostic Trouble Codes (DTCs) may set.
NOTE: The SRS must be fully operational and free of faults before releasing the vehicle to the customer.
A1 CHECK THE COMMUNICATION NETWORK
  •   WARNING: Before beginning any service procedure in this section, refer to Safety Warnings in section 100-00 General Information. Failure to follow this instruction may result in serious personal injury.
    REFER to: Pyrotechnic Device Health and Safety Precautions (100-00 General Information, Description and Operation).
  • Ignition ON.
  • Using a diagnostic scan tool, carry out a network test.

Does the BCM pass the network test?
Yes GO to A2
No To diagnose no communication with the BCM ,
REFER to: Communications Network (418-00) .

A2 CHECK THE RCM (RESTRAINTS CONTROL MODULE) CONTINUOUS MEMORY DIAGNOSTIC TROUBLE CODES (CMDTCS)
  • Using a diagnostic scan tool, carry out RCM self-test.
  • Using a diagnostic scan tool, clear RCM Diagnostic Trouble Codes (DTCs).
  • Wait 10 seconds.
  • Using a diagnostic scan tool, carry out RCM self-test.

Is DTC U0146:00 retrieved again?
Yes GO to A3
No The system is operating correctly at this time. The DTC may have been set due to high network traffic or an intermittent fault condition.

A3 RETRIEVE THE RECORDED DIAGNOSTIC TROUBLE CODES (DTCS) FROM THE RCM (RESTRAINTS CONTROL MODULE) SELF-TEST
  • Check the recorded Diagnostic Trouble Codes (DTCs) from the RCM self-test.

Is DTC U3003:16 or U3003:17 recorded?
Yes
REFER to: Pinpoint Test - DTC: Z, Vehicles With: Rear Seat Side Airbag (501-20B Supplemental Restraint System, Diagnosis and Testing).
No GO to A4

A4 RETRIEVE THE RECORDED DIAGNOSTIC TROUBLE CODES (DTCS) FROM THE GWM (GATEWAY MODULE A) SELF-TEST
  • Using a diagnostic scan tool, carry out GWM self-test.
  • Check for recorded Diagnostic Trouble Codes (DTCs) from the GWM self-test.

Is DTC U3003:16 or U3003:17 recorded?
Yes
REFER to: Communications Network (418-00) .
No CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new GWM .
REFER to: Gateway Module A (GWM) (418-00 Module Communications Network, Removal and Installation). REPEAT the RCM self-test. If DTC U0146:00 returns, INSTALL a new RCM .
REFER to: Restraints Control Module (RCM) (501-20B Supplemental Restraint System, Removal and Installation).


    Diagnosis and Testing - Pinpoint Test - DTC: V

    U..

    Diagnosis and Testing - Pinpoint Test - DTC: X

    U0253:00 Normal Operation and Fault Conditions The RCM uses information contained in messages from the APIM sent on the HS-CAN .   DTC Fault Trigger Conditions   DTC Description Fault Trigger Conditions U0253:00 Lost Communication with Accessory Protocol Interface M..

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    Removal and Installation - Wheel Knuckle Bushing

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    Hydraulic Press

    Removal

    NOTE: Removal steps in this procedure may contain installation details.

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    Refer to: Wheel Knuckle - Vehicles With: Rear Drum Brakes (204-02B Rear Suspension - AWD, Removal and Installation).
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